Generac 004373-3, 004626-2, 004373-3 , 004626-2 owner manual Introduction Inside Front Cover

Table of Contents

Guardian Liquid-cooled 40 kW Generator

Introduction	Inside Front Cover
Read This Manual Thoroughly		IFC
Contents		IFC
Operation and Maintenance		IFC
How to Obtain Service		IFC
Authorized Dealer Locator Number		IFC

Safety Rules			2
Section 1 – General Information			4
1.1	Unpacking/Inspection		4
	1.1.1	Lifting the Generator	4
1.2	The Generator		4
1.3	Generator AC Connection Systems		4
1.4	Prepackaged Transfer Switch		4
1.5	Automatic System Operation		4
1.6	Main Circuit Breaker		5
1.7	Engine Protective Devices		5
	1.7.1 Low Oil Pressure Switch		5
	1.7.2	High Coolant
		Temperature Switch	5
	1.7.3 Low Coolant Level Switch		5
	1.7.4	Overspeed Shutdown	5
	1.7.5	Overcrank Shutdown	5
	1.7.6	DC Fuse	5
1.8	Specifications		5
	1.8.1	Generator	5
	1.8.2	Engine	6

1.9Fuel Requirements

	and Recommendations	6
	1.9.1 Conversion to LP Gas Vapor	6
1.10	Engine Oil Recommendations	7
1.11	Coolant	7
1.12	Emission Control System	7

Section 2 – Installation			8
2.1	Basic Standby Electric System		8
2.2	Emergency Circuit Isolation Method		9
2.3	Total Circuit Isolation Method		9
2.4	Grounding the Generator		9
2.5	Generator AC Neutral Connections		9
2.6	Transfer Switch Start Signal Connections....		9
	2.6.1	Pre-Packaged Type Switch	9
	2.6.2	“GTS” Type Switch	9
2.7	Battery Installation		10
	2.7.1	Vented Batteries	10
2.8	Preparation Before Start-up		10
	2.8.1 Prior to Initial Start-up		11
	2.8.2	Transfer Switch	11
	2.8.3	Fuel System	11
	2.8.4	Generator Set Lubrication	11
	2.8.5	Engine Coolant	11
	2.8.6	Belt Tension	11
	2.8.7	Electrical System	11
	2.8.8	Rodent Protection	11

Section 3 – Operation			12
3.1	Control Console Components		12
	3.1.1	AC Voltmeter	12
	3.1.2	AC Ammeter	12
	3.1.3	AC Frequency Meter	12
	3.1.4	DC Voltmeter	12
	3.1.5	Hourmeter	12
	3.1.6	Auto/Off/Manual Switch	12
	3.1.7	Fault Indicator Lamp	12
	3.1.8	15-amp Fuse	12
	3.1.9	7.5 Amp Inline Fuse	12
	3.1.10	Voltage-phase Selector Switch	12
	3.1.11	Set Exercise Time Switch	12
3.2	Using the Auto/Off/Manual Switch		12
	3.2.1	“Auto” Position	12
	3.2.2	“Off” Position	13
	3.2.3	“Manual” Position	13
3.3	Automatic Transfer Operation		13
3.4	Sequence of Automatic Operation		13
3.5	Engine Heater		13
3.6	Weekly Exercise Cycle		14
Section 4 – Maintenance			14
4.1	Checking the Engine Oil Level		14
4.2	Changing the Engine Oil and Filter		15
	4.2.1	Engine Oil Recommendations	15
	4.2.2	Oil and Filter Change Procedure	15
4.3	Changing the Engine Air Cleaner		15
4.4	Spark Plugs		16
4.5	Battery Maintenance		16
	4.5.1	Battery Replacement	16
4.6	Cooling System		17

4.7Overload Protection for

	Engine DC Electrical System		17
4.8	DC Fuse		17
4.9	Engine Coolant		17
4.10	Miscellaneous Maintenance		17
	4.10.1 Cleaning the Generator		17
	4.10.2 Rodent Protection		17
4.11	Out of Service Procedure		18
	4.11.1 Removal From Service		18
	4.11.2 Return to Service		18
4.12	Service Schedule		19
Section 5 – Troubleshooting			20
Section 6		– Electrical Data	21
Section 7		– Exploded Views and
		Parts Lists	30
Section 8		– Notes	59
Section 9		– Warranty	60

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